2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 460Get this manual
LIGHTING SYSTEM 3Voltage Connect the pocket tester (DC 20 V) to the headlight couplers as shown When the light switch is set to "HI" When the light switch is set to "LO"
2Voltage Connect the pocket tester (DC 20 V) to the tailbrake light connectors as shownTailbrake light connectors (wire harness side) Positive tester probe blue Negative tester probe black 2